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Downlink joint base-station assignment and packet scheduling algorithm for cellular CDMA/TDMA networks

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Publication date2006
Host publicationCommunications, 2006. ICC '06. IEEE International Conference on
Place of PublicationNew York
PublisherIEEE
Pages4339-4344
Number of pages6
Volume9
ISBN (Electronic)1424403553
ISBN (Print)1424403553
Original languageEnglish
EventIEEE International Conference on Communications (ICC 2006) - Istanbul, Turkey
Duration: 11/06/200615/06/2006

Conference

ConferenceIEEE International Conference on Communications (ICC 2006)
CountryTurkey
Period11/06/0615/06/06

Conference

ConferenceIEEE International Conference on Communications (ICC 2006)
CountryTurkey
Period11/06/0615/06/06

Abstract

In this paper using a utility-based approach, downlink packet transmission in a CDMA/TDMA cellular network is formulated as an optimization problem. A utility function corresponds to each packet served by a base-station that is an increasing function of the packet experienced delay and the channel gain, and a decreasing function of the base-station load. Unlike previous works, in this paper, the optimization objective is to maximize the total network utility instead of the base-station utility. We show that this optimization results in joint base-station assignment and packet scheduling. Therefore, in addition to multi-user diversity, the proposed method also exploits multi-access-point diversity and soft capacity. A polynomial time heuristic algorithm is then proposed to solve the optimization problem. Simulation results indicate a significant performance improvement in terms of packet-drop-ratio and achieved throughput.